The isEmpty() method of Properties class is used to check if this Properties object is empty or not.
Syntax:
public boolean isEmpty()
Parameters: This method accepts no parameters
Returns: This method returns a boolean value stating if this Properties object is empty or not.
Below programs show the implementation of int isEmpty() method.
Program 1:
// Java code to show the implementation of// isEmpty method  import java.util.*;public class GfG {      // Main method    public static void main(String[] args)    {          // Create a properties and add some values        Properties properties = new Properties();        properties.put("Pen", 10);        properties.put("Book", 500);        properties.put("Clothes", 400);        properties.put("Mobile", 5000);          // Print Properties details        System.out.println("Properties: "                           + properties.toString());          // Checking if the Properties is empty        System.out.println("Is Properties empty: "                           + properties.isEmpty());    }} |
Output:
Properties: {Book=500, Mobile=5000, Pen=10, Clothes=400}
Is Properties empty: false
Program 2:
// Java program to demonstrate// isEmpty() method.  import java.util.*;  public class GFG {      // Main method    public static void main(String[] args)    {          // Create a properties and add some values        Properties properties = new Properties();          // Print Properties details        System.out.println("Current Properties: "                           + properties.toString());          // Checking if the Properties is empty        System.out.println("Is Properties empty: "                           + properties.isEmpty());    }} |
Output:
Current Properties: {}
Is Properties empty: true
References: https://docs.oracle.com/javase/9/docs/api/java/util/Properties.html#isEmpty–
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